Conical crushing mill



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c. F. SMITH ET AL `coNIcAL CRUSHING MIKLL Filed May 21. 192e s sheets-sheet 1 March 20, 1928.

C. F. SMITHl ET AL CONICAL CRUSHING MILL 5 Sheets-Sheet 2 C. F. SMITH ET AL -CONICAL CRUSHING MILL March 20, 1928. 1,663,355

Filed May 21. 1926 e s sheets-sheet 5 Patented Mar. 20, 19,28.k

UNITED srn'rssp PATENT OFFICE, n

CHARLES F. SMITH, ARTHUR'C. THIELE, AND LLOYD I?. WALKER, 0F MILWAUKEE,

WISCONSIN, ASSIGNORS T0 SMITH ENGINEERING WORKS, 0F MILWAUKEE, WIS- i GONSIN, A CORPORATION 0F WISCONSIN.

CONIGAL CEtUSHINGr` MILL.

Application med May 2 1,

Our invention relates to a crushing device and particularly to a cone Crusher wherein a generally conical concave isrotated about a single generally conic crushing roll. One object ofour invention is to provide a roll crusher of the type herein shown wherein rock of relatively large size may be taken without serious strain on the machine. Another `object is theprovision of such al Crusher wherein the rock is reduced' in a series of pinches. Ano-ther object is the provision of improved Vfeeding means "for such a Crusher.l Another object is the provision of an improved adjustment for such a crusher. Another object is the provision ol` improved driving and ybearing means. Other objects will appear from time to time in the course of the specification and claims.

Vite illustrate our invention more or vless diagrammatically in the accompanying drawings, whereinl Figure l is a plan view;

Figure 2 is a section on the line 2 2 of Fig. l; 4

Figure 3 is an end elevation of one end;

Figure 4; is an end elevation of the opposite end; and v y Figure 5 is a detail section Von the line 5 5 of Fig. 4. i i

Lilie parts are y.indicated Yby like symbols throughout 'the specilication and drawings.

A generally indicates a base member having at one end the upwardly projecting portion A1, at the opposite end a relatively low portion A2, and an intermediate portion or step A3.

Mounted on the portionA1 is a'supporting member B upwardly jfirojectingv from the sides of which are the bearing members B1 wherein is trunnioned` the supporting bearing ring B2 by the trunnions B3. B4 is an yupwardly projecting support member associated with the member B and being provided with the upwardly projecting members B5 in each of which are mounted apen tured bearing blocks B6 adjustable for example by means of the shims B7. B8 is a cap or cover adapted to be held by the screws B2, and B10 are jack screws for raising the bearing blocks to insert or remove shims.

Trunnioned in the blocks BG is the bearing sleeve C having the trunnions C1. It is pro- 1926. serial No. 110,684.v

vided with the inner bearing member C2 of Babbitt metal or other suitable material apertured in line withthe Loiling duct C? controlled by thepoilin'g compression lmem-- ber C4. C5 is aterminal closure cap externally screw threaded as at C6 in engagement with ,the end C7 of the sleeve C and apertured as at C8 to receive the lookin@ screws C2 which penetrate the sleeve as lat l". C11- is any ysuitable closure or cover plate for the j C12 is av guard plateV provided for example with the packingC,-

end of the member C5.

and secured to the opposite end of the sleeve B2. Mounted about the intermediate p0r-` tion of the concave D isthe driving gear D* in mesh withthe pinion D5 upon any suitable drive shaft Da the power source for which is not herein indicated and forms no part hereof. D7. is any suitable driving' pulley, the shaft bein'g mounted vfor example in the bearings D8.` The crushing concave D has a conical hrung member D0 which fis provided with a liange D10 and issecured to` the crushing concavek D by screws D11.

Mounted about the large end of the concave is anyv suitable wear taking track E kof relatively f resistant material, for example r manganese steel, adapted tooppose or rest upon the two rollers El pivoted Vuponthe movable blocks E2 upon the baseportiony A3, such .portion k,being slotted fork example asat E2 to receive a downwardly projecting slide or guide member E4 upon such blocks E2. are controlling setscrews adapted to engage the outer faces `of `such blocks, to provide for their `lateral adjustment toward and away from each other.

G is any suitabley ,scraping member or blade mounted lfor example upon the shaft or rod G1 one end .of which is pivotedas at G2110 the member G12 attached to theinner end of the bearing sleeve C. The opposite4 end of the shaft is slidably secured in the end of the arms G3 the connection for which will be below described. It is provided with a terminal stop member G4 adapted to engage the outside of the end of the arm G5. G5 is a stop on the rod G1 and GG a compression spring adapted normally to thrust the rod G1 to the left, as shown in Figure 2 in order to hold the block G4 normally in contact with the outer face of the supporting arm or bracket G5. The spring G6 acts also as a torsional spring with a left hand movement in order to hold the scraping blade kG in contact with the inner surface of kthe conical lining member D5.

LMounted upon the support member A2 is any suitable upwardly projecting bracket having the two verticals H H connected by the upper transverse member H1. Projecting'upwardly from the member H1 are the two arms H2 provided with the bearing blocks Ha resting upon the removable adjusting shims H4. H5 are jack screws for raising the bearing blocks for insertion or removalof the shims. H6 is a bearing sleeve provided with the trunnions H7 rotatable in the blocks H3. It contains the wear taking bearing member H5, of babbitt or other suitable material, apertured as at H1 in line with the oilaperture H10 and the oil compression members H11. H12 is a closing cap for the outer end of the sleeve and H13 a shield for the inner end of the sleeve provided with the packing means H1".

- Depending from said sleeve H6 and pivoted to it as at I is the link I1 to the bottom of which is secured the transverse yoke I2 held by the lockingvnuts I3 screw threaded upon the lower end of the link I1. The yoke I2 is provided with the centering members IA1 in opposition to the centering members I5 on the transverse frame member H1. Between them` are compressed the spiral springs I6 adapted normally to draw the bearing sleeve H5 downwardly.

The supporting bracket G5 for the rod G1 is preferably secured to the upwardly projecting members H2. The sleeves C and I-IG are generally aligned and rotatably receive the opposite ends of the crusher shaft generally indicated as K. Such shaft includes 5 kthe reduced end sections K1 to engage vsaid sleeves respectively, the intermediate sections- K2 and the relatively enlarged central section K5 with the outwardly projecting flange Ktupon which is seated the conical crushing head`K5. Such head is provided with a removable crushing mantle K5 bearing upon an intermediate layer, for example of Zinc K7; The mantle is provided with lugs KS adapted to penetrate cam slots K5 in the conic head, and then be rotated so that lugs K8 ride upon cam surfaces K1o to draw the mantle tight on the head.

Mounted upon the bea-ring ring B2, as by lthe bracket L is the enlarged feed chute L1 in communication with the pivot spout L1 extending within the small end opening of the concave D to a point upon the feed or receiving side of the roll.

It will be realized that whereas we have described and shown a practical and operative device that nevertheless many changes may be made without departing from the spirit of our invention, and we therefore wish our drawings and description to be taken as in a broad sense illustrative and diagrammatic rather than as limiting us to our precise showing.

The use and operation of our invention are as follows:

We provide a crushing concave adapted to be rotated about a generally horizontal axis. The concave is shown as arelatively short flared roll one end of which is rotatably received in a trunnioned external ring bearing B2, the other end being provided with the bearing track E resting upon a pair of rollers E1. The concave is positively driven by means of the surrounding gear DAL in mesh with the pinion D5. The trunnioned bearing B1 permits adjustment of the supporting rollers E1, and these rollers may be adjusted toward or away from each other, in order to allow for wear, or to control the angle or slope of the concave.

Mounted within the open ended concave member is the crushing shaft K one end of which. is mounted in the trunnioned bearing sleeve C and the other in the t-runnioned and yieldably mounted sleeve HG. The spiral springs I, thrusting downwardly upon the yoks I2, tend to draw the bearing` and thus the shaft downwardly in relation to the concave. The cone K5 and the crushing mantle KG are thus thrust downwardly into contact with the lower portion of the concave.

In operation material is fed to the device through the hopper L1 and is delivered from the inner end of the chute L2 to the crushing zone between the cone or roller and the concav. As the concave is rotated und as the roller is compressed against it, the roller or cone rotates in response to the contact. The material is fed to the point of entry between roll and concave, so that in response to free rotation, it is crushed or nipped between them. The concave is driven at a rapid rate, sufficient to maintain a substantial proportion, if not all, of the material being crushed in centrifugal Contact with its inner surface as it rotates. vWe therefore provide a scraper G to scrape the material from the surface of the concave, to prevent packing. The scraper operates to separate the crushed material to throw it back for re-crushing, incidentally breaking up such clods or portions as tend to pack.

We claim:

l. A. conical crushing mill comprising a UBBMBB l rotatably mounted conical concave and n conical crushing head. within the concave with its axis atan ang-1e to the axis of the concave, a shaft for such head, a ivotal support for such shaft positioned eyond one end of the concave and a yieldingly mounted support for the opposite end `of the shaft positioned beyond the opposite .end of the concave. y l Y Y 2. A .conical crushing mill .comprising a rotatably mounted conical concave and 'a conical crushing head within the concave with its axis at an angle to theaxis of the concave, a shaft for such head, the ends of said shaft projecting outwardly beyond the opposite ends of the concave, and bearings therefor, situated beyond the ends of ythe concave. p i

3. A conical crushing mill comprising a rotatably mounted conical, concave and a conical crushing head within the concave with its axis at an angle to Vthe axis ofthe concave, a shaft for such head, including `a pivoted bearing` for the end of said shaft beyond the feed end of the concave and a yieldablv mounted bearing .for the opposite end of the shaft.

4. A conical crushing` mill comprising a rotatably mounted conical concave and a conical crushing head within .the concave with its axis at an angle to the axis ofthe concave, a shaft for such head', including a pivoted vertically adjustable bearing foi-.the` end of said shaft beyond the feed end yof the concave and a yieldably mounted bearing for the opposite end ofthe shaft.

5. A conical crushing mill comprising a rotatably mounted conical 'concave and a conical crushing head Within the concave with its axis at an angle to the axis ofthe concave, a shaft for such head, a pivotal support for such shaft positioned beyond one end of the concave and a yieldingly mounted support for the `opposite end of the shaft positioned beyond the opposite end of 1 the concave, and means for axiallyadjusting (lll said shaft.

6. A conical crushing mill comprising a rotatably mounted conical concave, a trunnioned bearing ring therefor, ar conical crushinghead Within the concave, its axis at an angle to the axis of the concave, and supporting means for limiting the rotation of said concave about the axis of the bearing ring.

7. A` conical crushingmill comprising a rotatably mounted conical concave andra conical crushing7 head within ythe `concave With its axis at an angle to the axis of the concave, means for rotating said concave, and supporting bearing means for such concave includingin part a plurality of later-y ally spaced supporting rollers.

l8. A conical crushing mill comprising a rotatably mounted conical concave and ia conical cmishing head lwithin the 'concave with its axis atan "angle, to the 'axis of the concave, means for "rotating said concave, and supportingbearing means for `such 'concave rincluding in `part. a plurality of laterally spaced supporting rollers, and a removable Wear taking track aboutsaid concave opposed to said rollers.

9. A con-ical crushing mill comprising a rotatablyjmounted conical concave 'and 'a conical crushing head within the concave with its axis at an angle to the axis 'of the concave, means for rotating said concave,

and l'supporting bearing means for such concave including in part a plurality of laterally spaced supporting rollers, and means for laterally adjusting suoli rollers.

l0. A conical crushing mill comprising a rotatably mounted conical means for rotating it, a conical crushing head Within theconcave, a supporting bearing about one end of said concave, 'and la supporting roller positioned `beneath `the opposite end of said concave.v

' .11. A conical crushing mill comprising a rotatably mounted Y y means for rotating it, a conical crushing head within the concave, a tiltably mounted supporting bearing about `one end of `said concave, and an adjustable supporting bearing means beneath the opposite endof the concave.

l2. A vconical crushing mill comprising a rotatably mounted conical v'concave and means for rotating it, a conical crushin head Within the concave, ya tiltably mounted supporting bearing about one yend of `said concave, and an adjustable supp'ortingbearing means beneath the opposite end of the concave, including in part a `plurality of supporting rollers. y

y13. A conical crushing mill comprising a rotatably mounted conical concavek and .means for Vrotating it, a conical` crushing head Within the concave, a tiltably mounted supporting bearing .about lone end of said concave and an adjustable supportingbearing lmeans beneath the opposite end of the concave, includingV a pair of supporting rollers andmeans for varying the distance therebetween.

14. A conical `crushing mill comprising a rotatably mounted conical concave, a. conical crushing head within the concave, a tiltably mounted supporting bearing about one end of said concave, and-an adjustable supporting bearing means beneath the opposite end of the concave, a gear about said concave. a gear in mesh therewithin, and means for driving said last mentioned gear to rotate the concave.

15. A conical crushing mill comprising a rotatably mounted conical concave and a concave and `conical concave 'and lois (lll

conical crushing head Within. the concave, a. shaft for such head, a pivotal support for such shaft positioned beyond the line of the concave and a yieldingly mounted support for the opposite end of the shaft, and means for vertically adjusting said lirst mentioned support.

16. A conical crushing mill comprising` a rotatably mounted conical concave and a. conical crushing head within the concave, a shaft for such head. a pivotal support for such shaft positioned beyond the line of the concave, comprisingl a fixed, upwardly projecting support. member, a plurality of ver tically adjustable members mounted thereon, removable adjustment shims for said members, a tiltable bearing member for the end of said shaft and a pivotal connection between it and said members.

17. A conical crushing mill comprising a rotatably mounted conical concave and a conical crushing head within the concave, a shaft for such head, a pivotal support for such shaft positioned beyond the line of the concave and a yieldingly mounted support for the opposite end of the shaft, including a fixed upwardly projecting` support member, a vertically movable support member associated therewith, a bearingsleeve for the shaft associated with the upper end thereof, and yielding means tending normally to move such movable support member downwardly.

18. A conical crushing mill comprising a rotatably conical concave and a conical crushing head within the concave, a shaft for such head, a pivotal support for such shaft positioned beyond the line of the concave and a yieldingly mounted support for the opposite end of the shaft, including' alixed upwardly projecting support member, a vertically movable support member associated therewith, a bearing sleeve for the shaft associated with the upper end thereof, and yielding means tending normally to move such movable support member downwardly, comprising a yolre on such member and Va plurality of springs compressed between such yoke and the fixed support member.

19. A conical crushing mill comprising a rotatably mounted conical concave and a conical crushing head within the concave. a shaft for such head, a pivotal support for such shaft positioned beyond the line of the concave and a yieldingly mounted support for the opposite end of the shaft, including a fixed upwardly*projecting vsupport member, a vertically movable support member associated therewith, a bea-ring sleeve for the shaft associated with the upper end thereof, and yielding means tending normally to move such movable support member downwardly, comprising a yoke on such member and a plurality of springs compressed between suchiyoke and theV fixed support member, such yoke being adjustable along said vertically movable support member.

20. A conical crushing mill comprising a rotatably mount-ed conical concave and a conical crushing head within the concave, a shaft for such head, a pivotal support for such shaft positioned beyond the line of the concave and a yieldingly mounted support for the opposite end of the shaft, including a fixed upwardly projecting support member, a vertically movable support member associated therewith, a bearing sleeve for the shaft associated with the upper end thereof, and yielding means tending normally to move such movable support member downwardly, and a plurality of vertically adjustable pivot members associated with such bearing sleeve.

21. A conical crushing mill comprisin T a rotatably mounted conical concave and a conical crushing head within the concave, a shaft for such headpa pivotal support for such shaft positioned beyond the line of the concave and a yieldingl-y mounted support for the opposite end of the shaft, including a fixed upwardly projecting support niember, a vertically movable support member associated therewith, a bearing sleeve for the shaft associated with the upper end thereof, and yielding means tending normally to move such movable support member downwardly, and a plurality of vertically adjustable pivot members associated with such bearingI sleeve, comprising pivot blocks and adjusting shims associated therewith.

22. A conical crushing mill comprising a rotatably mounted conical concave and a conical crushing head within the concave, and a scraper adapted to clear material from the inner ,face of said concave along a zone spaced away from and above the crushing zone between the head and the opposed portion of the concave and supporting means engaging each end of said scraper.

23. A conical crushing mill comprising a rotatably mounted conical concave and a conical crushing head within the concave, and a scraper adapted to clear material from the inner face of said concave along a Zone spaced away from and above the crushing zone between the head and theopposed portion of the concave, a rotatably mounted supporting member for said scraper, and means for rotating it and for thereby normally engaging the scraper withthe opposed face yconnections between the scraper and the supports for the crushing tioned beyond the ends of the concave, a scraper adapted to clear material from the inner face of said concave and supporting ends of said such crushing head being positioned to oppose the lower portion of the concave, a scraper positioned within said concave to clear material from the upper portion of said concave, supports for each end of the crushing head, a scraper supporting arm eX,- tending upwardly from one of said supports,

the other of said supports being apertured to admit the opposite end of the scraper.

27. A conical crushing mill comprising a rotatably mounted conical concave and a conical crushing head within the concave, such crushing head being positioned to oppose the lower portion of the concave, a scraper positioned within said concave to clear material from the upper portion of said concave, and supporting members, at the opposite ends of said concave, adapted to support the ends of the scraper and of the crushing head.

28. A conical crushing mill comprising a rotatably mounted conical concave and means tor driving it, and a conical crushing head within the concave and positioned closely to approach it, and a feed spout adapted to penetrate the smaller end of the concave and extending to a point closely adjacent the cone, and adapted to deliver material to the space between cone and concave at the front of the cone.

29. A conical crushing mill comprising a' rotatably mounted conical concave and .means for driving it, and a conical crushing head within the concave and positioned closely to approach it, and means for delivering material to the space between cone and concave at the front of the cone, in relation to the direction of rotation of the cone.

30. A conical crushing mill comprising a rotatably mounted conical concave and a conical crushing head within the concave, and a scraper adapted to clear material from the inner face of said concave along a zone spaced away from and above the crushing zone ybetween the head and the opposed portion of the concave, for said scraper, said scraper being 1n rotatable relation with said and means scraper blade in scraping position.

31. A conical crushing mill comprising a rotatably mounted conicalA concave and a conical crushing head within the concave, and a scraper adapted to clear material from the inner face of said concave along a zone spaced away from and above the crushing zone'between the head and the opposed por*V tion of the concave, supporting means for said scraper, said scraper being in rotatable relationV with said supporting means, and yielding means for normally holding said scraper blade in scraping position.

Signed at Milwaukee, Wisconsin this 4th day of May, 1926.

, Y CHARLES F. SMITH.

f Signedl at Milwaukee, Wisconsin this 4th day of May, 1926.

ARTHUR C. THIELE.

Signed at Montreal, Province of Quebec this 10th day of May, 1926.

LLOYD P. VALKER.

supporting means supporting means, for normally holding said 

